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Relative Strength of Magnetic Field Inferred from Magnetic Field Lines

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The current sensitivity of a moving coil galvanometer increases by 20% when its resistance is doubled. Calculate, by what factor does the voltage sensitivity change?(1) Becomes 3/5 times(2) Becomes 2/5 times(3) No change(4) Decreases by a factor of7/

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Q. The current sensitivity of a moving coil galvanometer increases by 20% when its resistance is doubled. Calculate by what factor does the voltage sensitivity change?

Q. To increase the current-sensitivity of a moving-coil galvanometer by

50 %

, its resistance is increased so that the new resistance becomes twice its initial resistance. By what factor does its voltage-sensitivity change?

Q. Give two factors by which the voltage sensitivity of a moving coil galvanometer can be increased.

Q. If a shunt of value

\frac{1}{n}

times the galvanometer resistance, is applied to a moving coil galvanometer. By which factor its current sensitivity will change?

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